Question

I need answer for these questions

Record the ammeter current. Reverse the current (and the ammeter) and adjust the resist deflects exactly 45 degree on the opposite side of the magnetic meridian. Record the current currents and calculate, using the theoretical formula for the magnetic field at the center horizontal component of the earth's magnetic field. Determination of the vertical component of the earth's magnetic field and the total. Set the dipping needle's plane along the magnetic meridian and measure and record the field. Making use of this dip angle and the results of part A above, calculate the vertices magnetic field and the total magnetic field of the earth. QUESTIONS: Why can magnetic lines of force not intersect? What is meant by saying that a magnetic field line is a "closed loop"? What is meant by the term "flux density"? How could one "shield" a piece of equipment from a strong magnetic field?

Answer 1

To understand, q.no. 1, you have to know about VECTOR.

VECTOR: A VECTOR has only one particular direction. If suppose it has more than one direction, then it is not a VECTOR quantity. Ex. velocity, acceleration, magnetic, field etc....

1) The two magnetic field lines do not intersect each other because if they do it means at the point of intersect the Field has two directions. But, magnetic field is a vector quantity. So, it has only one particular direction. So, which is not possible.

2)Magneti lines starts from, N pole to S pole out side the magnet and also,

in side the mag net, they continue from S pole to N pole. So, they form closed loops.

3)FLUX: The number of magnetic lines passing through an area and perpendicular to the particular area is known as MAGNETIC FLUX.

FLUX DENSITY: the flux per unit area is flux density.

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